<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import { debounce } from '@/utils'
import feedback from '@/api/userFeedback/feedback.js'

export default {
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '280px'
    }
  },
  data() {
    return {
      chart: null
    }
  },
  mounted() {
    this.initChart()
    this.__resizeHandler = debounce(() => {
      if (this.chart) {
        this.chart.resize()
      }
    }, 100)
    window.addEventListener('resize', this.__resizeHandler)
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    window.removeEventListener('resize', this.__resizeHandler)
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')
      feedback.get().then(res => {
        feedback.get({
          page : 0,
          size : res.totalElements
        }).then(resq => {
          var feedbackCount = 0;
          resq.content.forEach(item => {
            if(item.handled) {
              feedbackCount++
            }
          })
          var noFeedbackCount = resq.totalElements - feedbackCount;
          this.chart.setOption({
            tooltip: {
              trigger: 'item',
              formatter: '{a} <br/>{b} : {c} ({d}%)'
            },
            legend: {
              left: 'center',
              bottom: '10',
              data: ['反馈总数','已回复', '未回复']
            },
            calculable: true,
            series: [
              {
                name: '反馈信息回复占比',
                type: 'pie',
                roseType: 'radius',
                radius: [55, 90],
                center: ['50%', '38%'],
                data: [
                  { value: res.totalElements, name: '反馈总数' },
                  { value: feedbackCount, name: '已回复' },
                  { value: noFeedbackCount, name: '未回复' }
                ],
                animationEasing: 'cubicInOut',
                animationDuration: 2600
              }
            ]
          })
        })
      })
    }
  }
}
</script>
